You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alltransclusions gatcontinue="GA2051330164|623" />
  </query-continue>
  <query>
    <pages>
      <page pageid="229" ns="0" title="does hilary duff smoke????" />
      <page pageid="279" ns="0" title="Katy Perry without make up" />
      <page pageid="313" ns="0" title="What can I name my black female Maine coon?" />
      <page pageid="415" ns="0" title="I want to be as skinny as Keira Knightley" />
      <page pageid="424" ns="0" title="Do WWE Wrestlers Take Steriods?" />
      <page pageid="428" ns="0" title="why are all fashion designers (men) Gay?" />
      <page pageid="444" ns="0" title="is Calvin Klein gay ?" />
      <page pageid="544" ns="0" title="Is Mitt Romney gay?????????????" />
      <page pageid="606" ns="0" title="Who&#039;s prettier Britney Spears or Jessica from SNSD?" />
      <page pageid="1615" ns="0" title="Is there any country out there without McDonald&#039;s?" />
    </pages>
  </query>
</api>